public boolean getServerVer(){
                try {
                    String path=getResources().getString(R.string.url_server); 
                    URL url = new URL(path);
                    HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
                    //httpConnection.setDoInput(true);
                    //httpConnection.setDoOutput(true);
                    //httpConnection.setRequestProperty("Content-type", "application/x-java-serialized-object");
                    httpConnection.setRequestMethod("GET");
                    httpConnection.connect();
                    InputStream inputStream = httpConnection.getInputStream();  
                    InputStreamReader reader = new InputStreamReader(inputStream);
                    BufferedReader bReader = new BufferedReader(reader);
                    String json = bReader.readLine();
                    JSONArray array = new JSONArray(json);
                    JSONObject jsonObj = array.getJSONObject(0);
                    newVerCode = Integer.parseInt(jsonObj.getString("verCode"));   
                    newVerName = jsonObj.getString("verName");
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    return true;//如果这里改为false 则不更新会退出程序
                } 
                return true;
            }